<template>
  <div class="auth-page">
    <div class="container page">
      <div class="row">
        <div class="col-md-6 offset-md-3 col-xs-12">
          <h1 class="text-xs-center">{{ isLogin ? "Sign in" : "Sign up" }}</h1>
          <p class="text-xs-center">
            <nuxt-link :to="isLogin ? '/register' : '/login'"
              >{{ isLogin ? "Need" : "Have" }} an account?</nuxt-link
            >
          </p>

          <ul class="error-messages" v-if="errors">
            <template v-for="(messages, field) in this.errors">
              <li v-for="(mes, i) in messages" :key="field + ' ' + i">
                {{ field }}: {{ mes }}
              </li>
            </template>
          </ul>

          <form @submit.prevent="submit">
            <fieldset class="form-group">
              <input
                v-if="!isLogin"
                v-model="user.username"
                class="form-control form-control-lg"
                type="text"
                placeholder="Your Name"
                required
              />
            </fieldset>
            <fieldset class="form-group">
              <input
                v-model="user.email"
                class="form-control form-control-lg"
                type="email"
                placeholder="Email"
                required
              />
            </fieldset>
            <fieldset class="form-group">
              <input
                v-model="user.password"
                class="form-control form-control-lg"
                type="password"
                placeholder="Password"
                required
                minlength="8"
              />
            </fieldset>
            <button class="btn btn-lg btn-primary pull-xs-right">
              {{ isLogin ? "Sign in" : "Sign up" }}
            </button>
          </form>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { mapMutations } from "vuex";
import { login, register } from "../../api/user";
// 仅在客户端加载这个包
const Cookie = process.client ? require("js-cookie") : undefined;

export default {
  middleware: ['notAuthenticalted'],
  name: "Login",
  data() {
    return {
      user: {
        email: "lanpang9661@163.com",
        password: "",
        username: "",
      },
      errors: {}, // 错误信息
    };
  },
  computed: {
    isLogin() {
      return this.$route.name === "login";
    },
  },
  methods: {
    async submit() {
      try {
        const { data } = this.isLogin
          ? await login({ user: this.user })
          : await register({ user: this.user });
        this.setUser(data.user);
        // 为了防止刷新页面数据丢失 需要把数据持久化
        Cookie.set("user", data.user);
        this.$router.push({ path: "/" });
      } catch (error) {
        this.errors = error.response.data.errors;
      }
    },
    ...mapMutations(["setUser"]),
  },
};
</script>